OSU Wheat Pathology

Articles tagged with: Disease updates

Wheat Disease Update – 31 May 2023

Meriem Aoun, Small Grains Pathologist Department of Entomology & Plant Pathology, Oklahoma State University During the last two weeks of May, high incidence and severity of leaf spotting diseases (mainly spot blotch and Septoria tritici blotch) were observed in multiple wheat fields in Oklahoma (Figure 1). These diseases were favored by the abundant rainfall during [ Read More ]

Wheat Disease Update – 10 May 2023

Meriem Aoun, Small Grains Pathologist Department of Entomology & Plant Pathology, Oklahoma State University Root rots were the primary diseases observed this week (May 8-9) in wheat fields and research trials in Cherokee (Alfalfa County), Alva (Woods County), and Lahoma (Garfield County). Infected plants were stunted, white, with discolored roots and stems. Peeling leaf sheaths [ Read More ]

Wheat Disease Update – 2 May 2023

Meriem Aoun, Small Grains Pathologist Department of Entomology & Plant Pathology Oklahoma State University Wheat tours during the last week of April in southwestern Oklahoma (Tipton, Altus), south-central Oklahoma (Walters), and central Oklahoma (Apache and Chickasha) showed wheat in these areas to be at heading/flowering stages. On April 21, stripe rust was first observed at [ Read More ]

Wheat Disease Update – 17 April 2023

Meriem Aoun, Small Grains Pathologist Department of Entomology & Plant Pathology, Oklahoma State University During the last week of March and in early April, common root rot (caused by Bipolaris sorokiniana) was found in wheat samples from western Oklahoma. These samples were collected from fields in Washita, Kingfisher, Grant, and Ellis counties. A wheat sample [ Read More ]

Wheat Disease Update – 27 March 2023

Meriem Aoun, Small Grains Pathologist Department of Entomology & Plant Pathology, Oklahoma State University In mid-March, wheat infected with soilborne wheat mosaic virus (SBWMV)/ wheat spindle streak mosaic (WSSMV) were observed in Oklahoma State University (OSU) research trials in Lahoma (Figure 1) and near Stillwater. The much later planting last fall in cooler soils could [ Read More ]

Wheat Disease Update – October 5, 2022

Meriem Aoun, Small Grains Pathologist Department of Entomology & Plant Pathology, Oklahoma State University. As we start the new wheat season in Oklahoma, some disease management strategies can be made this fall to reduce damages later in the season. One of the most effective and sustainable ways to manage diseases is to grow resistant varieties. [ Read More ]

Wheat Disease Update – 2 June 2022

Meriem Aoun, Small Grains Pathologist Department of Entomology & Plant Pathology, Oklahoma State University. Crown and root rot (Figure 1) was among the common diseases throughout the last two weeks of May. We observed this disease in multiple counties in Oklahoma including Cimmaron, Payne, Major, Texas, Beaver, Canadian, Kingfisher, and Alfalfa. Culturing from infected samples [ Read More ]

Wheat Disease Update – 19 May 2022

Meriem Aoun, Small Grains Pathologist Department of Entomology & Plant Pathology, Oklahoma State University. During my visit to wheat fields in Morris (Okmulgee County) on May 16, I observed multiple fungal and bacterial diseases. Wheat crop in Morris looked good and tall compared to other locations in Oklahoma (Figure 1). Morris got substantial amount of [ Read More ]

Wheat Disease Update – 12 May 2022

Meriem Aoun, Small Grains Pathologist Department of Entomology & Plant Pathology Oklahoma State University Root/crown/foot rots were observed in multiple wheat fields in April and May in Woods, Alfalfa, Blaine, Cotton, and Payne counties. Dr. Amanda Silva reported severely damaged wheat plants in drought stressed fields mainly in Cherokee and Alva (Figure 1). Infected plants [ Read More ]

Wheat Disease Update – 28 April 2022

Meriem Aoun, Small Grains Pathologist Department of Entomology & Plant Pathology, Oklahoma State University During April, the Plant Disease and Insect Diagnostic Laboratory at OSU received multiple wheat samples showing symptoms of streaking on the leaves. Leaf streaks were greenish yellow and parallel as shown in Figure 1. Enzyme linked immunosorbent assay (ELISA) on these [ Read More ]